Adjustable gunstock



E. R. wlTTMAN v 2,453,394

ADJUSTABLE GUNSTOCK Nov. 9, 1948.

Filed may 22, 194e 4 s@ o 9V VENTOR Erm. R.\\'T1MAN QAM-L I' m wif yoauexs Patented Nov. 9, 1948` UNITED sr-AT est PATENT ori-ics iADJUSTABLE GUNs'rooK nmirn. wiuman, Grana Rapids, Mien.. p ApplicationMay 22, 1946, Serial No'. 671,647

`rifles, shotguns and thelike,` upon pullingthe trigger and with theresultant ringvofthe explosive charge in the barrel, under the forcesgenerated have a tendency to bepulled aside or jump upwardly. Thepresent` inventionis directedto an improvement in the gun stock forobviating, in a great degree,V such `tendencies `conlpensating thereforso that a holding of the barrel against movement upon firing and inproper alined position with reference to .the target shot at isobtained.v r y It is a primary object and purpose` of the presentinvention to provide a practical, readily man ufactured and applied gunst-ockof novel construction for attainment of better results `inshooting and obtaningor `greatly* lessening undesiredmovements of thegun barrel when shoot- -ing takes place. l

An understanding ofthe invention maybe had from the followingdescriptiomvtaken in connection with the accompanyingdrawing, in whichFig. 1 is a perspective AViewV of` a gun equipped with my invention. f

Fig. 2 is a fragmentary enlarged longitudinal v vertical section throughthe outer end portion of a gun stock having my invention appliedthereto.

Fig. 3 is a similar horizontal section, and

Fig. 4 illustrates in perspective a number of the interior parts whichare used in the embodiment of my invention. i i

Like reference characters refer to like parts in the different figuresin the drawing.

The gun may be of a conventional small arms type having a stock I fromwhich a barrel 2 extends. With my invention the stock is shortened atits outer end and the outer free end thereof is formed substantially asthe arc of a circle, as at 3, from its upper to its lower side, and isalso in the arc of a circle transversely, as at 4, providing in effect atransverse curved convex rib at the rear end of the stock portion I. Therod 5 (Fig.

y 5 Claims. (C1. i2-73) forward side having a concaved recessedl forma-2) extends through the stock portion I forwardly and upwardly forconnection thereof to the barrel in the assembly of the stock andbarrel, according to conventional practice.

At the rear end of the stock portion I, a member 6 which is acontinuation of the stock, and which together with the stock portion Imakes a complete stock of proper length, is located. its

tion-complementary to the convex rib at the back end of the stockportion I. Said member 6 at its outer end has the usual metal plate 'lsecured theretoand which in the firing of the gun is pressed against theshoulder.

t In the outer or back end of the stock portion I a recess is cut toreceive two blocks 8 and 9 of substantially identical form locatedagainst each other at their adjacent face portions they are rccessed, asat 8a, and 9a, respectively. When the two blocks 8 and I9 are placedtogether a nut I0 is seated in said recesses. The blocks 8 and 9, neartheir ends, have screw passing opening for screws ll-which are driveninto the stock portion I as best shown in Fig. 2 to secure blocks 8 and9 in place. l

The member` 6 at its outer end inside of the plate l, is also recessedsubstantially in horizontal alinement withthe recess containing theblocks 8 and 9.. A relatively heavy plate I2 is located and securedtherein by screws. The butt plate 'l has an opening I3 immediately infront of which is a long screw I4, thehead of which is accessible forVturning byl ascrew driver through the opening I3.` At its inner endportion, the shank of the screw I4is threaded and passes throughopenings inA blocks 8 and 9 and is secured through the nut I0, its innerend extending intoa :recess therefor in the stock part I.

A coiled compression spring i5 is located around the shank of theelongated screw i4, at its outer end bearing against the plate I2, andat its inner end against a cylindrical block I which seats against theblock 8, as shown in Fig. 2. The member 6 is bored or otherwise providedwith an opening or passage for the reception of the spring I5, screw I4and block IS, as shown.

With the construction described there is permitted a limited universalmovement of the outer end member G of the stock with respect to theforward larger stock portion I. By tightening the screw I4, by threadingit further through the nut I0, the complementary surfaces of thesurfaces of the stock members I and S may be held against each otherwith greater or lesser degrees of friction producing force. The amountof turning of screw I4 in any event will be small, for varying thefrictional engagement of the parts I .and 6 against each other, and theowner of any gun can adjust the screw I4 through the nut Iii to obtainthe best conditions for himself. Of course, the spring I5 may also bevaried as to strength.

With the present invention, upon pulling the 3 trigger and exploding thecharge, the forces which tend to jerk the gun barrel 01T of the targetand change its position are transmitted to the member 6 which may moverelative to the stock member I thereby greatly lessening the tendency ofthe barrel to move. Such tendency to move is carried to the back member6 of the gun stock, which by the construction outlined, is permitted acompensating movement withoutk the previous movement of the gun barrel,which theretofore l had been detrimental to proper holding' of the gunon the target when ring takes place.

It is of course to be understood that the outer." 'l

side of the nut I will be rounded as shown for easy movement. It isfurther to be understood that the spring I shown as of a conical formdoes not necessarily require suchform, but may.

be of a cylindrical form.

The invention upon lfull test and trial has proved very satisfactory inuse. The appended claims dene the invention which is to be comprehensiveof all forms of structure within their scope. f

I claim:

1. A gun having a stock in two parts, one. a relatively long frontportion.v and the other a shorter butt portion at the rear end thereof,said front and lbutt portions being located in alineinent and havingcomplementary adjacent curved end surfaces adapted to engage each otherand permit a universal movement of one with respect to the other, amember secured at the rear end of the front stock portion, a nutcarried'by said member, a screw threaded rod extending through the buttportionvand passing through said nut, said nut having a limited rockingmovement with respect to the member which carries it whereby the buttportion of the stock may have a limited universal movement, with respectto the front portion thereof.

2. In a construction as dened in claim 1, a member through which thescrew threaded rod passes secured at the rear end of the butt portion ofthe stock, said screw threaded rod having a head at its rear endengaging with said member,

and a coiled compression spring around said rod between said membercarried by the butt and the nut carrying member connected with the frontstock portion.

3. In a construction as described, a gun stock of two parts including afront relatively long stock portion and a shorter butt portion inalinement therewith located at its rear end, the adjacent ends of saidfront and butt stock portions, one having a curved convex form from itsupper to its lower edge in the arc of a circle and also curved convexlyin the arc of a circle from one sideto .the other, and the` other havingcomplementary surfaces of convexform to seat thereagainst, a membercomprising two blocks located one against the other secured at the rearend of the front stock portion, said front stock portion being recessedto receive them, said blocks at adjacent sides having recesses inconjunction with each other forming a chamber, a nut seated 'l insaidrecesses, a plate secured at the rear end of the butt portion, anelongated headed screw passing through said plate and through saidblocks and threading through said nut, the openings in' said blocksthrough which the rod passes being of larger area than the cross sectionof the rod. i

, 4. A construction as defined in claim 3, and a butt plate secured atthe'rear end of said butt portion of the stock covering the same, saidplate having an opening through which access to the head of the screw isobtained.

5.' A construction as dened in claim 3, a memberlocated at the rear sideof the rearmost block, said "screw, threaded rod passing therethrough,and a coiled compression spring around the rod between' said rear plateand said member.

REFERENCES CITED Oliver Dec. 17, 1912 Caretto Sept. 18, 1923 ,FOREIGNPATENTS Country Date Great Britain 1889 Number Number 1,157

